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                    Closing price on 6/2/2015
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                    | Open | 11.50 |  
                    | High | 11.50 |  
                    | Low | 11.50 |  
                    | Volume | 100 |  
                    | Split-adjusted Price | 7.10 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/2/2015 | +0.30 / +2.68% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 100 |   |  
            | 6/1/2015 | 0.00 / 0.00% | 11.20 | 11.20 | 11.20 | 11.20 | 11.20 | 6.91 | 0 |   |  			
            | 5/29/2015 | +0.80 / +7.69% | 11.20 | 11.20 | 11.20 | 11.20 | 11.20 | 6.91 | 100 |   |  
            | 5/28/2015 | -0.10 / -0.95% | 10.00 | 10.40 | 9.80 | 10.40 | 9.88 | 6.42 | 5,100 |   |  			
            | 5/27/2015 | -1.00 / -8.70% | 10.40 | 10.50 | 10.40 | 10.50 | 10.40 | 6.48 | 1,300 |   |  
            | 5/26/2015 | +1.00 / +9.52% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 200 |   |  			
            | 5/25/2015 | -0.50 / -4.55% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 8,783 |   |  
            | 5/22/2015 | 0.00 / 0.00% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 6.79 | 0 |   |  			
            | 5/21/2015 | 0.00 / 0.00% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 6.79 | 50 |   |  
            | 5/20/2015 | -0.50 / -4.35% | 10.40 | 11.00 | 10.40 | 11.00 | 10.46 | 6.79 | 12,700 |   |  			
            | 5/19/2015 | +0.80 / +7.48% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 100 |   |  
            | 5/18/2015 | -1.10 / -9.32% | 10.70 | 10.70 | 10.70 | 10.70 | 10.70 | 6.61 | 500 |   |  			
            | 5/15/2015 | +0.90 / +8.26% | 11.80 | 11.80 | 11.80 | 11.80 | 11.80 | 7.28 | 200 |   |  
            | 5/14/2015 | -0.10 / -0.91% | 12.00 | 12.00 | 10.90 | 10.90 | 11.45 | 6.73 | 200 |   |  			
            | 5/13/2015 | -0.60 / -5.17% | 11.90 | 11.90 | 11.00 | 11.00 | 11.45 | 6.79 | 200 |   |  
            | 5/12/2015 | -1.20 / -9.38% | 11.60 | 11.60 | 11.60 | 11.60 | 11.60 | 7.16 | 1,100 |   |  			
            | 5/11/2015 | +0.70 / +5.79% | 13.20 | 13.20 | 10.90 | 12.80 | 11.74 | 7.90 | 550 |   |  
            | 5/8/2015 | +0.80 / +7.08% | 12.10 | 12.10 | 12.10 | 12.10 | 12.10 | 7.47 | 2,800 |   |  			
            | 5/7/2015 | -1.00 / -8.13% | 11.10 | 11.30 | 11.10 | 11.30 | 11.10 | 6.98 | 2,200 |   |  
            | 5/6/2015 | +0.80 / +6.96% | 11.60 | 12.30 | 11.60 | 12.30 | 11.95 | 7.59 | 5,000 |   |  			
            | 5/5/2015 | 0.00 / 0.00% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 0 |   |  
            | 5/4/2015 | 0.00 / 0.00% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 0 |   |  			
            | 4/27/2015 | -0.10 / -0.86% | 10.60 | 11.60 | 10.50 | 11.50 | 10.97 | 7.10 | 2,600 |   |  
            | 4/24/2015 | -0.40 / -3.33% | 11.00 | 11.70 | 10.80 | 11.60 | 10.84 | 7.16 | 10,000 |   |  			
            | 4/23/2015 | -0.20 / -1.64% | 11.00 | 12.00 | 11.00 | 12.00 | 11.03 | 7.41 | 3,100 |   |  
            | 4/22/2015 | -0.20 / -1.61% | 11.20 | 12.20 | 11.20 | 12.20 | 11.24 | 7.53 | 4,200 |   |  			
            | 4/21/2015 | -0.10 / -0.80% | 13.60 | 13.60 | 11.30 | 12.40 | 11.57 | 7.65 | 6,200 |   |  
            | 4/20/2015 | -0.30 / -2.34% | 11.60 | 12.70 | 11.60 | 12.50 | 11.69 | 7.72 | 2,300 |   |  			
            | 4/17/2015 | +0.20 / +1.59% | 11.40 | 12.80 | 11.40 | 12.80 | 11.45 | 7.90 | 8,400 |   |  
            | 4/16/2015 | +1.00 / +8.62% | 11.60 | 12.60 | 11.60 | 12.60 | 11.61 | 7.78 | 19,100 |   |  |